Jenson Button has been hit with a 15-place grid penalty for the Monaco Grand Prix

Button, 37, is back on the Formula One grid in Monte Carlo this weekend following Fernando Alonso's decision to take part in the Indianapolis 500.

McLaren's season has been derailed by a series of problems with their engine supplier Honda. The British team prop up the constructors' championship having failed to score a single point this year.

And following a series of changes to the parts on Button's Honda engine after an issue was detected following second practice at the principality on Thursday, the Englishman is poised to start his one-off race from the back of the pack.